can: omit received RTR frames for single ID filter lists

commit f706644d55f90e8306d87060168fef33804d6dd9 upstream.

Since commit d253eee20195b25e298bf162a6e72f14bf4803e5 the single CAN
identifier filter lists handle only non-RTR CAN frames.

So we need to omit the check of these filter lists when receiving RTR
CAN frames.

Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/net/can/af_can.c b/net/can/af_can.c
index f8df8f420fa13690b9d59249a9460e7a1724a2ef..150f0b261d7a6bab8ed407af463da37e3f091475 100644 (file)
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -622,7 +622,10 @@ static int can_rcv_filter(struct dev_rcv_lists *d, struct sk_buff *skb)
                }
        }
 
-       /* check CAN_ID specific entries */
+       /* check filterlists for single non-RTR can_ids */
+       if (can_id & CAN_RTR_FLAG)
+               return matches;
+
        if (can_id & CAN_EFF_FLAG) {
                hlist_for_each_entry_rcu(r, n, &d->rx[RX_EFF], list) {
                        if (r->can_id == can_id) {